﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Drawing;
using System.Data;
using System.Data.SqlClient;
using System.Drawing.Printing;
using System.Windows.Forms;

namespace website_monitor
{
    internal class PrintDataGridView
    {

        private static List<DataGridViewCellPrint> CellPrintList = new List<DataGridViewCellPrint>();

        private static PageSetupDialog pageSetup = null;

        private static int printRowCount = 0;



        private static bool IsPrint = true;

        private static bool IsRole = true;

        private static int PoXTmp = 0;

        private static int PoYTmp = 0;

        private static int WidthTmp = 0;

        private static int HeightTmp = 0;

        private static int RowIndex = 0;



        /// <summary>

        /// 打印DataGridView控件

        /// </summary>

        /// <param name="dataGridView">DataGridView控件</param>

        /// <param name="includeColumnText">是否包括列标题</param>

        /// <param name="e">为 System.Drawing.Printing.PrintDocument.PrintPage 事件提供数据。</param>

        /// <param name="PoX">起始X坐标</param>

        /// <param name="PoY">起始Y坐标</param>

        public static void Print(DataGridView dataGridView, bool includeColumnText, PrintPageEventArgs eValue, ref int PoX, ref int PoY)

        {
            pageSetup = new PageSetupDialog();

            pageSetup.PageSettings = eValue.PageSettings;

            //pageSetup.Document;

            pageSetup.ShowDialog();

            try

            {
                if (PrintDataGridView.IsPrint)

                {
                    PrintDataGridView.printRowCount = 0;

                    PrintDataGridView.IsPrint = false;

                    PrintDataGridView.DataGridViewCellVsList(dataGridView, includeColumnText);

                    if (PrintDataGridView.CellPrintList.Count == 0)

                        return;

                    if (PoX > eValue.MarginBounds.Left)

                        PrintDataGridView.IsRole = true;

                    else

                        PrintDataGridView.IsRole = false;

                    PrintDataGridView.PoXTmp = PoX;

                    PrintDataGridView.PoYTmp = PoY;

                    PrintDataGridView.RowIndex = 0;

                    WidthTmp = 0;

                    HeightTmp = 0;

                }

                if (PrintDataGridView.printRowCount != 0)

                {
                    if (IsRole)

                    {
                        PoX = PoXTmp = eValue.MarginBounds.Left;

                        PoY = PoYTmp = eValue.MarginBounds.Top;

                    }

                    else

                    {
                        PoX = PoXTmp;

                        PoY = PoYTmp;

                    }

                }

                while (PrintDataGridView.printRowCount < PrintDataGridView.CellPrintList.Count)

                {
                    DataGridViewCellPrint CellPrint = CellPrintList[PrintDataGridView.printRowCount];

                    if (RowIndex == CellPrint.RowIndex)

                        PoX = PoX + WidthTmp;

                    else

                    {
                        PoX = PoXTmp;

                        PoY = PoY + HeightTmp;

                        if (PoY + HeightTmp > eValue.MarginBounds.Bottom)

                        {
                            HeightTmp = 0;

                            eValue.HasMorePages = true;

                            return;

                        }

                    }

                    using (SolidBrush solidBrush = new SolidBrush(CellPrint.BackColor))

                    {
                        RectangleF rectF1 = new RectangleF(PoX, PoY, CellPrint.Width, CellPrint.Height);

                        eValue.Graphics.FillRectangle(solidBrush, rectF1);

                        using (Pen pen = new Pen(Color.Black, 1))

                            eValue.Graphics.DrawRectangle(pen, Rectangle.Round(rectF1));

                        solidBrush.Color = CellPrint.ForeColor;

                        eValue.Graphics.DrawString(CellPrint.FormattedValue, CellPrint.Font, solidBrush, new Point(PoX + 2, PoY + 3));

                    }

                    WidthTmp = CellPrint.Width;

                    HeightTmp = CellPrint.Height;

                    RowIndex = CellPrint.RowIndex;

                    PrintDataGridView.printRowCount++;

                }

                PoY = PoY + HeightTmp;

                eValue.HasMorePages = false;

                PrintDataGridView.IsPrint = true;

            }

            catch (Exception ex)

            {
                eValue.HasMorePages = false;

                PrintDataGridView.IsPrint = true;

                throw ex;

            }



        }



        /// <summary>

        /// 将DataGridView控件内容转变到 CellPrintList

        /// </summary>

        /// <param name="dataGridView">DataGridView控件</param>

        /// <param name="includeColumnText">是否包括列标题</param>

        private static void DataGridViewCellVsList(DataGridView dataGridView, bool includeColumnText)

        {
            CellPrintList.Clear();

            try

            {
                int rowsCount = dataGridView.Rows.Count;

                int colsCount = dataGridView.Columns.Count;



                //最后一行是供输入的行时，不用读数据。

                if (dataGridView.Rows[rowsCount - 1].IsNewRow)

                    rowsCount--;

                //包括列标题

                if (includeColumnText)

                {
                    for (int columnsIndex = 0; columnsIndex < colsCount; columnsIndex++)

                    {
                        if (dataGridView.Columns[columnsIndex].Visible)

                        {
                            DataGridViewCellPrint CellPrint = new DataGridViewCellPrint();

                            CellPrint.FormattedValue = dataGridView.Columns[columnsIndex].HeaderText;

                            CellPrint.RowIndex = 0;

                            CellPrint.ColumnIndex = columnsIndex;

                            CellPrint.Font = dataGridView.Columns[columnsIndex].HeaderCell.Style.Font;

                            CellPrint.BackColor = Color.Orange;// dataGridView.ColumnHeadersDefaultCellStyle.BackColor;

                            CellPrint.ForeColor = dataGridView.ColumnHeadersDefaultCellStyle.ForeColor;

                            CellPrint.Width = dataGridView.Columns[columnsIndex].Width;

                            CellPrint.Height = dataGridView.ColumnHeadersHeight;

                            CellPrintList.Add(CellPrint);

                        }

                    }

                }

                //读取单元格数据

                for (int rowIndex = 0; rowIndex < rowsCount; rowIndex++)

                {
                    for (int columnsIndex = 0; columnsIndex < colsCount; columnsIndex++)

                    {
                        if (dataGridView.Columns[columnsIndex].Visible)

                        {
                            DataGridViewCellPrint CellPrint = new DataGridViewCellPrint();

                            CellPrint.FormattedValue = dataGridView.Rows[rowIndex].Cells[columnsIndex].FormattedValue.ToString();

                            if (includeColumnText)

                                CellPrint.RowIndex = rowIndex + 1;//假如包括列标题则从行号1开始

                            else

                                CellPrint.RowIndex = rowIndex;

                            CellPrint.ColumnIndex = columnsIndex;

                            CellPrint.Font = dataGridView.Rows[rowIndex].Cells[columnsIndex].Style.Font;

                            System.Drawing.Color TmpColor = System.Drawing.Color.Empty;

                            if (System.Drawing.Color.Empty != dataGridView.Rows[rowIndex].Cells[columnsIndex].Style.BackColor)

                                TmpColor = dataGridView.Rows[rowIndex].Cells[columnsIndex].Style.BackColor;

                            else if (System.Drawing.Color.Empty != dataGridView.Rows[rowIndex].DefaultCellStyle.BackColor)

                                TmpColor = dataGridView.Rows[rowIndex].DefaultCellStyle.BackColor;

                            else

                                TmpColor = dataGridView.DefaultCellStyle.BackColor;

                            CellPrint.BackColor = TmpColor;

                            TmpColor = System.Drawing.Color.Empty;

                            if (System.Drawing.Color.Empty != dataGridView.Rows[rowIndex].Cells[columnsIndex].Style.ForeColor)

                                TmpColor = dataGridView.Rows[rowIndex].Cells[columnsIndex].Style.ForeColor;

                            else if (System.Drawing.Color.Empty != dataGridView.Rows[rowIndex].DefaultCellStyle.ForeColor)

                                TmpColor = dataGridView.Rows[rowIndex].DefaultCellStyle.ForeColor;

                            else

                                TmpColor = dataGridView.DefaultCellStyle.ForeColor;

                            CellPrint.ForeColor = TmpColor;

                            CellPrint.Width = dataGridView.Columns[columnsIndex].Width;

                            CellPrint.Height = dataGridView.Rows[rowIndex].Height;

                            CellPrintList.Add(CellPrint);

                        }

                    }

                }

            }

            catch { throw; }

        }



        private class DataGridViewCellPrint

        {
            private string _FormattedValue = "";

            private int _RowIndex = -1;

            private int _ColumnIndex = -1;

            private System.Drawing.Color _ForeColor = System.Drawing.Color.Black;

            private System.Drawing.Color _BackColor = System.Drawing.Color.White;

            private int _Width = 100;

            private int _Height = 23;

            private System.Drawing.Font _Font = new System.Drawing.Font("宋体", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));

            /// <summary>

            /// 获取或设置单元格的字体。

            /// </summary>

            public System.Drawing.Font Font

            {
                set { if (null != value) _Font = value; }

                get { return _Font; }

            }

            /// <summary>

            /// 获取为显示进行格式化的单元格的值。

            /// </summary>

            public string FormattedValue

            {
                set { _FormattedValue = value; }

                get { return _FormattedValue; }

            }

            /// <summary>

            /// 获取或设置列的当前宽度 （以像素为单位）。默认值为 100。

            /// </summary>

            public int Width

            {
                set { _Width = value; }

                get { return _Width; }

            }

            /// <summary>

            /// 获取或设置列标题行的高度（以像素为单位）。默认值为 23。

            /// </summary>

            public int Height

            {
                set { _Height = value; }

                get { return _Height; }

            }

            /// <summary>

            /// 获取或设置行号。

            /// </summary>

            public int RowIndex

            {
                set { _RowIndex = value; }

                get { return _RowIndex; }

            }

            /// <summary>

            /// 获取或设置列号。

            /// </summary>

            public int ColumnIndex

            {
                set { _ColumnIndex = value; }

                get { return _ColumnIndex; }

            }

            /// <summary>

            /// 获取或设置前景色。

            /// </summary>

            public System.Drawing.Color ForeColor

            {
                set { _ForeColor = value; }

                get { return _ForeColor; }

            }

            /// <summary>

            /// 获取或设置背景色。

            /// </summary>

            public System.Drawing.Color BackColor

            {
                set { _BackColor = value; }

                get { return _BackColor; }

            }

        }
    }
}
